Method of making car parts.



W. D. FORSYTH. METHOD or MAKING CAR PARTS. APPLICATION FILED DEOA 1913.

1,125,294. Patented Jan. 19, 1915.

WITNESSES Tan STATES PATEN onruon.

WILLIAM n ronsvTn, or YOUNGSTOWN, on o, ASSIGNOR TonAiLwAY PnOnUcTs CORPORATION, or BUFFALO, NEW YORK, A CORPORATION OF NEW.YORK.,

METHOD OF MAKING can PA n'Ts Patented Jan. 19, 1915.

Application filed December 4, 1913. Serial N 0. 804,677.

To all whom it may concern:

Be it known that I, WILLIAM D. Fonsr'rn, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented new and useful Improvements in Methods of Making Car Parts, of which the following is a specification.

My invention relates to the parts of railway cars, such as bolsters, truck side frames, brake beams and the like, and particularly to a method of making from a metal plate a truss member which constitutes the compression member and the tension member of a king-post truss.

One of the principal objects of my invention is to devise a method of cheaply.

making from a metal plate a light and Etrmg truss member of the character speci- The invention consists in treating a metal plate by certain operations of slotting, bending and welding or riveting to produce a structure which constitutes the compression member and the tension member of a kingpost truss.

In the accompanying drawing, which forms part of this specification, and in which like reference characters refer to like parts throughout the several views, Figure 1 is an end edge view of a metal plate from which a truss member is made. according to my invention; Fig. 2 is a plan view of the blank used in making a truss member according to my invention; Fig. 3 is an end view of the blank shown in Fig. 2 after the side portions thereof have been bent to lie in parallel planes; Fig. iis a side view of the blank in the form shown in Fig. 3; Fig. 5 is an end viewof the blank shown in Figs. 3 and 4 after the middle portion thereof has been displaced, showing the finished truss member; Fig. 6 is a side view of the finished truss member.

The truss member for a car part which is shown as made according to the invention is made from an oblong metal plate 1, the corner ,portions of which are cut off along oblique, curved or straight lines so that the longitudinal edges of the plate 1 converge near the ends ofsaid plate. In the plate 1 are'cut two parallel slots 4 which extend longitudinally of said plate and terminate short of its ends. The slots 4: divide the middle portion of the plate l into three longi tudinal portions, consisting of a middle portion 3, that is, the portion included between the slots 4:, and a side portion 6 located on each side of said'middle portion 3 between one of the slots 4 and thecorresponding edgeof the plate 1. The side portions 6 and the middle portion 3 are integral at their ends with the end portions 5 of the plate 1. In each of the side portions 6 is cut an opening 2 which extends from the adjacent slot i to the corresponding edge of the plate 1, so as to divide each edge por-' tion 6 into two parts. The plate 1, after it has been slotted and out as described, constitutes a blank 7 shown in Fig.2.

The blank 7 is bent to form a channel 10. The bending of the blank 7 is performed along two parallel lines which extend longitudinally of said blank 7 between the slots 4: and which are closer together than said slots 4, as indicated by the dotted lines 9 in Fig. 2. One of the slots 4 is located in each side of the channel 10, the lower edge of said slot being spaced above the bottom of said channel. The middle portion 11 of the bottom of the channel 10, which is, slightly longer than the slots 4, together with the portions of the sides of said channel 10 which are located below the slots 4:,-

maining end portions 5 of the bottom of 5 said channel in a direction perpendicular to said plane of said end portions 5 In other words, a middle portion of the channel 10, including the bottom thereof and portions of the sides thereof, is displaced perpendicularly from its own plane. The displacing of the middle portion 11 of the channel 10, as described, draws the end portions 5 of the channel 10 closer to each other and t brings the'ends of the two parts of each side portion 6 of the plate 1 together. The ends of the two parts of each of the side portions 6 are fastened together by welding or in any other suitable manner. Between the side portions 6 and the displaced middle portion 11 is an opening 8 in which is secured a'tie or strut, not shown, to complete a king-post truss. The middle portion 11 of the channel 10 is preferably vdisplaced to form a middle portion 12 thereof which lies in a plane parallel with and spaced from the plane of the end portions 5 of the channel 10, and two'inclined portions 13 which connect said middle portion 12"with said end portions 5.

The cutting, bending and Welding operations hereinbefore described, can be pera formed by suitable'dies, presses or other maall chinery. The dilferent operations may be performed while the plate is hot or cold. The shape of the plate 1, the shape and location of the slots 4, and the lines 9 of bending can be varied so as to distribute the metal of the plate 1 throughout the finished truss member as desired and as best adapted to resist the stresses in said truss member. Thus, a truss member for a car part can be made according to the invention both light and strong.

While for the purpose of illustration a truss member adapted for a car truck side frame has been shown as made according to my invention, my invention is not limited to the making of car truck side frames, but can be used to make other car parts or other truss constructions. The method hereinbefore described can be considerably modified without departing from my invention, and

I do not wish to be limited to the details of the method which is shown and described.

I claim as my invention:

1. A blank for making a car part comprising a metal plate having two spaced longitudinal slots therein terminating short of its ends, said plate having therein an opening extending transversely thereof from each of said slots to the corresponding edge of said plate.

2. A blank for making a car part comprising a" metal plate bent into a channel, said channel having a longitudinal slot in each side thereof, said slots lying in the sides of said channel above the bottom thereof and terminating short of the ends thereof,

said channel having an opening in each side thereof extending from the slot in that side to the top of that side.

3. The method of making car parts which consists in making two spaced slots in a metal plate, said slots extending longitudinally of said plate and terminating short of its ends, cutting an opening in each side por tion of said plate extending from one of said slots to the corresponding edge of said plate, each side portion of said plate being divided by said opening therein into two parts, bending said plate along two parallel lines extending longitudinally thereof into a channel, said lines being closer together than said slots, displacing the middle portion of said plate included between said slots perpendicularly from the plane thereof, and fastening together the separated ends of said two parts of each side portion of said plate.

In witness whereof li have hereunto subscribed my name in the presence of two subscribing witnesses.

WILLIAM n. ronsr'rn. 

